GE Lighting Garage Lighting & Basement 80046 20-Watt, 1200-Lumen T12 Light Bulb with Medium Bi-Pin Base, 6-Pack 24-Inch long 1.5 inch diameter T12 with medium bi-pin (g13) base Uses 20-watts Provides 1200 lumens Lasts 4.1 years based on 6 hours per day usage